UHF SATCOM
MIL-STD-188-181B waveform implementation on the SDR-4000
Ultra High Frequency Satellite Communications (UHF SATCOM) provides military users
with a long-haul data and voice
communications capability. To reduce your technology risk and speed your time to
market, Spectrum offers the physical
layer (PHY) implementation of the UHF SATCOM MIL-STD-188-181B waveform on its
flexComm SDR-4000 rugged platform.
The modulator/demodulator offering data-modes described in MIL-STD-188-181B is implemented
as a software application on the SDR-4000. A convenient 5 KHz or 25 KHz channelization carries the
spectrally efficient digitally modulated information waveform. A suite of “multi-h” continuous phase
modulation (CPM) modulated data-modes complements a variety of linearly modulated modes (PSK,
OQPSK, and FSK), offering the user and the application a chance to trade-off power (or alternatively
range) and data rate. In the receiver, robust waveform acquisition signal processing establishes timing
and phase synchronicity, and maximum likelihood-based estimation techniques are used to ascertain and
correct carrier-slips during ongoing phase tracking. CPM data is demodulated using Viterbi techniques,
where the memory inherent in the CPM modulation allows excellent detection performance. For added
robustness, optional data modes including those with forward error correction (FEC) and interleaving are
offered.
Contact
Spectrum to find out more.
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